Byong-Ho Jung
Pukyong National University
Filler metalCharpy impact testFerrite (iron)Heat-affected zoneComposite materialShielded metal arc weldingDuplex (telecommunications)Thermal shockDie (manufacturing)Shielding gasEutectic systemIntergranular corrosionStelliteMartensiteMetallurgyGrain sizeMaterials scienceWeldingArc weldingPolarization (electrochemistry)CorrosionTemperingFlux-cored arc weldingHardfacingPitting corrosionAlloyMartensitic stainless steelWelding processCorrosion current densityWeld metalTreatment timeElongationGas tungsten arc weldingAtmospheric temperature rangeBending (metalworking)FractographyGrain boundaryVanadiumPermeationGas metal arc weldingCarbideNitrogenTungstenMetalMolybdenumVolume fractionAnnealing (metallurgy)Lamellar structureThree point flexural testMicrostructureDissolutionAusteniteForgingToughnessDuplex (building)
12Publications
1H-index
5Citations
Publications 13
Newest
A deposited metal specimen of ER2594 which is a super duplex steel welding wire used to investigate the effect of sigma() phase on electrochemical corrosion characteristics was prepared by gas tungsten arc welding. Aging treatment was conducted for the specimen at the temperature range of to for 5 to 300 minutes after annealing at . Corrosion current density has decreased a little with an increase of aging time over 60 minutes at to and the uniform corrosion of deposited metal had more influence...
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#1Jae Hyoung LeeH-Index: 2
#2Byong-Ho JungH-Index: 1
Last. Jae-Ho JunH-Index: 1
view all 4 authors...
Superduplex stainless steels are important materials to the oil and gas industry, especially for off-shore production. TIG welding of super duplex stainless steels to obtain the optimal phase balance between austenite and ferrite is mainly achieved by controlling the cooling rate and the weld chemistry. The latter depends on the filler wire chosen and the shielding gas used. If TIG welding of superduplex stainless steels is performed with argon shielding gas only, then nitrogen gets lost from th...
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#1Jae Hyoung LeeH-Index: 2
#2Gi-Jeong SeoH-Index: 4
Last. Chang-Yong KangH-Index: 1
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A specimen of weld metal was prepared by GTA welding with weld wire of super duplex stainless steel. Aging treatment was conducted for the sample at the temperature range of 700 to for 5 to 300 minutes. The effect of aging temperature and time to pitting corrosion of weld metal has been investigated and the results were derived as follows. The volume fraction of phase tends to increase with an increase of aging temperature and time. Pitting potential Ep representing pitting corrosion was found t...
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#1Jae Hyoung Lee (Pukyong National University)H-Index: 2
#2Byong-Ho JungH-Index: 1
Last. Chang-Yong KangH-Index: 1
view all 4 authors...
A specimen of weld metal was prepared by GTA welding with weld wire of super duplex stainless steel. Aging treatment was conducted for the sample at the temperature range of 700 to for 5 to 300 minutes. The effect of volume fraction of -phase to intergranular corrosion of weld metal has been investigated and the results were derived as follows. The volume fraction of phase tends to increase with an increase of aging temperature and time and intergranular corrosion of weld metal was increased by ...
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A specimen of weld metal was prepared by GTA welding with weld wire of super duplex stainless steel. Aging treatment was conducted for the sample at the temperature range of 700 to 900℃ for 5 to 300 minutes. The effect of volume fraction of σ-phase to intergranular corrosion of weld metal has been investigated and the results were derived as follows. The volume fraction of σ phase tends to increase with an increase of aging temperature and time and intergranular corrosion of weld metal was incre...
Abstract: This study was investigated the effect of austenitizing treatment the microstructure and mechanical properties in modified 440A steel, and the results were as follows. The amount of remaining carbide decreases with increasing the austenitizing treatment temperature, and all carbide is completely dissolved at 1250℃. The amount of remaining carbide decreases with increasing the austenitizing treatment time, but the carbide remains insoluble up to 120 minutes at 1050℃. The strength and ha...
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Last. Sang-Myung ChoH-Index: 6
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#1Jae-Gyu ByunH-Index: 2
#2Jae-Ho JunH-Index: 1
Last. Sang-Myung ChoH-Index: 6
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#1Y.C. Kim (Pukyong National University)H-Index: 1
#2Byong-Ho Jung (Pukyong National University)H-Index: 1
Last. Chang-Yong Kang (Pukyong National University)H-Index: 1
view all 3 authors...
440A martensitic stainless steels which were modified with reduced carbon content(~0.5%) and addition of small amount of nickel, vanadium, tungsten and molybdenum were manufactured. Effects of alloying elements and tempering temperatures on the uniform corrosion in the solution of lN H2S04 were investigated through the electrochemical polarization test. When tempering temperature is constant, corrosion current density in active-passive transition point, Icorr, decreased a little with an increase...
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#1Sang-Myung ChoH-Index: 6
#2Sung-Ho KimH-Index: 1
Last. Byong-Ho JungH-Index: 1
view all 8 authors...
Abstract Hardfacing is one of the frequently applying method to increase surface hardness in hot forging die. Recently, hardfacing receives great attention due to it's repair availability and low cost. In hot forging die, crack resistance and thermal shock resistance have been considered as major properties, However there are few studies for the assessment of these properties. So, it is necessary to establish the assessment method for crack resistance and thermal shock resistance in hardfacing f...
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